///
/// Copyright © 2016-2025 The Thingsboard Authors
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///     http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///

import { Component, forwardRef, Input, input, output } from '@angular/core';
import { ControlValueAccessor, NG_VALUE_ACCESSOR, FormsModule } from '@angular/forms';
import { MatCheckbox } from '@angular/material/checkbox';

@Component({
    selector: 'tb-checkbox',
    templateUrl: './tb-checkbox.component.html',
    providers: [
        {
            provide: NG_VALUE_ACCESSOR,
            useExisting: forwardRef(() => TbCheckboxComponent),
            multi: true
        }
    ],
    imports: [MatCheckbox, FormsModule]
})
export class TbCheckboxComponent implements ControlValueAccessor {

  innerValue: boolean;

  @Input() disabled: boolean;
  readonly trueValue = input<any>(true);
  readonly falseValue = input<any>(false);
  readonly valueChange = output();

  private propagateChange = (_: any) => {};

  onHostChange(ev) {
    this.propagateChange(ev.checked ? this.trueValue() : this.falseValue());
  }

  modelChange($event) {
    if ($event) {
      this.innerValue = true;
      this.valueChange.emit(this.trueValue());
    } else {
      this.innerValue = false;
      this.valueChange.emit(this.falseValue());
    }
  }

  registerOnChange(fn: any): void {
    this.propagateChange = fn;
  }

  registerOnTouched(fn: any): void {
  }

  setDisabledState(isDisabled: boolean): void {
    this.disabled = isDisabled;
  }

  writeValue(obj: any): void {
    if (obj === this.trueValue()) {
      this.innerValue = true;
    } else {
      this.innerValue = false;
    }
  }
}
